It is a kind of to use the kneed buffer unit of what, it is suitable for one artifucial limb huckle of connection and a knee joint, and include: a pedestal, a seat of honour and two bolsters. The pedestal connects on the what knee joint, and including a top surface, which has two sides separately. The seat of honour between the what dual side-edge and the axis of the parallel top surface and the pedestal are pivotally connected and above the position what pedestal, and connect up the artifucial limb huckle. Between the two bolsters sandwiched what pedestal and the seat of honour, and the two sides of the difference position what axis, and at the seat of honour and the pedestal using the axis as axis rotates and imposes restoring force to the seat of honour and the pedestal in extruded situation respectively, so that the pedestal and the seat of honour using the axis as axis in the case where being rotated, it will receive two bolster buffering, the impact force of two direction of rotation is reduced.一種用於膝關節的緩衝裝置，適用於連接一義肢大腿部及一膝關節，並包含：一底座、一上座，及二緩衝件。該底座連接於該膝關節上，並包括一頂面，該頂面具有二相間隔的側邊。該上座沿一位於該二側邊間且平行該頂面的軸線與該底座樞接而位於該底座上方，並向上連接該義肢大腿部。該二緩衝件夾設於該底座與該上座間，且分別位於該軸線的兩側，並在該上座與該底座以該軸線為軸旋轉而分別受擠壓的情況下對該上座及該底座施以回復力，使得該底座與該上座在以該軸線為軸旋轉的情況下，均會受到該二緩衝件緩衝，兩旋轉方向的衝擊力均被減緩。
